Form 3 - Initial statement of beneficial ownership of securities:
SEC Accession No. 0000899243-18-017526
Filing Date
2018-06-20
Accepted
2018-06-20 20:48:25
Documents
1
Period of Report
2018-06-20

Document Format Files

Seq Description Document Type Size
1 FORM 3 SUBMISSION doc3.html 3  
1 FORM 3 SUBMISSION doc3.xml 3 7896
  Complete submission text file 0000899243-18-017526.txt   10520
Mailing Address 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116
Business Address 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116 617-585-2000
TRV GP IV, LLC (Reporting) CIK: 0001688325 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-38541 | Film No.: 18910735

Mailing Address 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116
Business Address 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116 617-585-2000
Third Rock Ventures GP IV, L.P. (Reporting) CIK: 0001688326 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-38541 | Film No.: 18910734

Mailing Address 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116
Business Address 29 NEWBURY STREET, 3RD FLOOR BOSTON MA 02116 617-585-2000
Third Rock Ventures IV, L.P. (Reporting) CIK: 0001688327 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-38541 | Film No.: 18910733

Mailing Address 245 FIRST STREET 4TH FLOOR CAMBRIDGE MA 02142
Business Address 245 FIRST STREET 4TH FLOOR CAMBRIDGE MA 02142 857-201-2700
Magenta Therapeutics, Inc. (Issuer) CIK: 0001690585 (see all company filings)

EIN.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2834 Pharmaceutical Preparations